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yanxiaonuo 6 years ago
commit 72276ea357
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18
.classpath
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<?xml version="1.0" encoding="UTF-8"?>
<classpath>
<classpathentry kind="src" path="src"/>
<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8">
<attributes>
<attribute name="owner.project.facets" value="java"/>
</attributes>
</classpathentry>
<classpathentry kind="con" path="org.eclipse.jst.server.core.container/org.eclipse.jst.server.tomcat.runtimeTarget/Apache Tomcat v8.5">
<attributes>
<attribute name="owner.project.facets" value="jst.web"/>
</attributes>
</classpathentry>
<classpathentry kind="con" path="org.eclipse.jst.j2ee.internal.web.container"/>
<classpathentry kind="con" path="org.eclipse.jst.j2ee.internal.module.container"/>
<classpathentry kind="lib" path="WebContent/WEB-INF/lib/ojdbc14.jar"/>
<classpathentry kind="output" path="build/classes"/>
</classpath>

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.project
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<?xml version="1.0" encoding="UTF-8"?>
<projectDescription>
<name>CheckCode</name>
<comment></comment>
<projects>
</projects>
<buildSpec>
<buildCommand>
<name>org.eclipse.jdt.core.javabuilder</name>
<arguments>
</arguments>
</buildCommand>
<buildCommand>
<name>org.eclipse.wst.common.project.facet.core.builder</name>
<arguments>
</arguments>
</buildCommand>
<buildCommand>
<name>org.eclipse.wst.validation.validationbuilder</name>
<arguments>
</arguments>
</buildCommand>
</buildSpec>
<natures>
<nature>org.eclipse.jem.workbench.JavaEMFNature</nature>
<nature>org.eclipse.wst.common.modulecore.ModuleCoreNature</nature>
<nature>org.eclipse.wst.common.project.facet.core.nature</nature>
<nature>org.eclipse.jdt.core.javanature</nature>
<nature>org.eclipse.wst.jsdt.core.jsNature</nature>
</natures>
</projectDescription>

12
.settings/.jsdtscope
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<?xml version="1.0" encoding="UTF-8"?>
<classpath>
<classpathentry excluding="**/bower_components/*|**/node_modules/*|**/*.min.js" kind="src" path="WebContent"/>
<classpathentry kind="con" path="org.eclipse.wst.jsdt.launching.JRE_CONTAINER"/>
<classpathentry kind="con" path="org.eclipse.wst.jsdt.launching.WebProject">
<attributes>
<attribute name="hide" value="true"/>
</attributes>
</classpathentry>
<classpathentry kind="con" path="org.eclipse.wst.jsdt.launching.baseBrowserLibrary"/>
<classpathentry kind="output" path=""/>
</classpath>

13
.settings/org.eclipse.jdt.core.prefs
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eclipse.preferences.version=1
org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
org.eclipse.jdt.core.compiler.codegen.methodParameters=do not generate
org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8
org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
org.eclipse.jdt.core.compiler.compliance=1.8
org.eclipse.jdt.core.compiler.debug.lineNumber=generate
org.eclipse.jdt.core.compiler.debug.localVariable=generate
org.eclipse.jdt.core.compiler.debug.sourceFile=generate
org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
org.eclipse.jdt.core.compiler.release=disabled
org.eclipse.jdt.core.compiler.source=1.8

8
.settings/org.eclipse.wst.common.component
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<?xml version="1.0" encoding="UTF-8"?><project-modules id="moduleCoreId" project-version="1.5.0">
<wb-module deploy-name="CheckCode">
<wb-resource deploy-path="/" source-path="/WebContent" tag="defaultRootSource"/>
<wb-resource deploy-path="/WEB-INF/classes" source-path="/src"/>
<property name="context-root" value="CheckCode"/>
<property name="java-output-path" value="/CheckCode/build/classes"/>
</wb-module>
</project-modules>

10
.settings/org.eclipse.wst.common.project.facet.core.xml
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<?xml version="1.0" encoding="UTF-8"?>
<faceted-project>
<runtime name="Apache Tomcat v8.5"/>
<fixed facet="java"/>
<fixed facet="jst.web"/>
<fixed facet="wst.jsdt.web"/>
<installed facet="java" version="1.8"/>
<installed facet="jst.web" version="3.0"/>
<installed facet="wst.jsdt.web" version="1.0"/>
</faceted-project>

1
.settings/org.eclipse.wst.jsdt.ui.superType.container
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org.eclipse.wst.jsdt.launching.baseBrowserLibrary

1
.settings/org.eclipse.wst.jsdt.ui.superType.name
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Window

15
WebContent/LoginFailure.jsp
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<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
登陆失败！请重新登录
<form action="login.jsp">
<input type="submit" value="返回"><br/>
</form>
</body>
</html>

3
WebContent/META-INF/MANIFEST.MF
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Manifest-Version: 1.0
Class-Path:

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WebContent/WEB-INF/lib/ojdbc14.jar
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WebContent/WEB-INF/web.xml
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<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
<display-name>CheckCode</display-name>
<welcome-file-list>
<welcome-file>login.jsp</welcome-file>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
</web-app>

44
WebContent/checkcode.jsp
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<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<script type="text/javascript" src="jquery-3.4.1.min.js"></script>
<script type="text/javascript">
function reloadCheckImg(){
//alert("hahhhh");
$("img").attr("src","img.jsp?t="+(new Date().getTime()));
}
$(document).ready(function(){
//alert("hahhhh");
$("#checkcodeId").blur(function(){
//alert("hahhhh");
var checkcode=$("#checkcodeId").val();
//校验：input输入验证法发送到servlet，服务端中的真实值和输入值对比，返回结果
$.post(
"CheckCodeServlet",
"checkcode="+checkcode,
function(result){
var resultHtml= $("<img src='"+result+"' height='15' width='15px'/>");
$("#tip").html(resultHtml);
}
);
});
});
</script>
<title>验证码</title>
</head>
<body>
验证码：
<input type="text" name="checkcode" id="checkcodeId" size=4/>
<!-- 验证码 -->
<a href="javascript:reloadCheckImg();"><img src="img.jsp" /></a>
<span id="tip"> </span>
</body>
</html>

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WebContent/images/right.jpg
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WebContent/img.jsp
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<%@page import="java.awt.image.BufferedImage"%>
<%@page import="java.awt.*"%>
<%@page import="java.util.*"%>
<%@page import="javax.imageio.ImageIO" %>
<%@ page language="java" contentType="image/jpeg; charset=UTF-8"
pageEncoding="UTF-8"%>
<%!
//产生随机颜色
public Color getColor(){
Random ran=new Random();//random和math.random区别
int r=ran.nextInt(256);
int g=ran.nextInt(256);
int b=ran.nextInt(256);
return new Color(r,g,b);
}
//产生验证码的值
public String getNum(){
//0~8999 -> 1000~9999
int ran=(int)(Math.random()*9000)+1000;
return String.valueOf(ran);
}
%>
<%
//禁止缓存 防止验证码过期
response.setHeader("Pragma","no-cache");
response.setHeader("Cache-Control","no-cache");
response.setHeader("Expires","0");
//绘制验证码图片
BufferedImage image=new BufferedImage(80,30,BufferedImage.TYPE_INT_RGB);
Graphics graphics=image.getGraphics();
graphics.fillRect(0,0,80,30);
//绘制验证码
graphics.setFont(new Font("seif",Font.BOLD,20));
graphics.setColor(Color.black);
String checkcode=getNum();
StringBuffer sb=new StringBuffer();
for(int i=0;i<checkcode.length();i++){
sb.append(checkcode.charAt(i)+" ");//获取验证码的每一位数字1 2 3 4...
}
//绘制验证码并调整位置
graphics.drawString(sb.toString(), 15, 20);
//绘制干扰线条
for(int i=0;i<60;i++){
Random ran=new Random();
int xBegin=ran.nextInt(80);
int yBegin=ran.nextInt(30);
int xEnd=ran.nextInt(xBegin+10);
int yEnd=ran.nextInt(yBegin+10);
graphics.setColor(getColor());
graphics.drawLine(xBegin, yBegin, xEnd, yEnd);
}
//验证码的真实值用于服务器后台验证
session.setAttribute("CHECKCODE", checkcode);
//产生图片
ImageIO.write(image,"jpeg",response.getOutputStream());
out.clear();
out=pageContext.pushBody();
//将image加入input src中<input type="iamge" src="..."/>
%>

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WebContent/jquery-3.4.1.min.js vendored
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37
WebContent/login.jsp
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<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<script type="text/javascript" src="jquery-3.4.1.min.js"></script>
<script type="text/javascript">
function reloadCheckImg(){
//alert("hahhhh");
$("img").attr("src","img.jsp?t="+(new Date().getTime()));
}
</script>
<title>验证码</title>
</head>
<body>
<form action="CheckCodeServlet" method="post">
用户名: <input type="text" name="uname"><br/>
密码: <input type="text" name="upwd"><br/>
<!-- -->
验证码：
<input type="text" name="checkcode" id="checkcodeId" size=4/>
<!-- 验证码 -->
<a href="javascript:reloadCheckImg();"><img src="img.jsp" /></a>
<span id="tip"> </span><br/>
<input type="submit" value="登录">
</form>
</body>
</html>

12
WebContent/welcome.jsp
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<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
登陆成功!
</body>
</html>

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build/classes/com/ytdlc/dao/LoginDao.class
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build/classes/com/ytdlc/entity/Login.class
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src/com/ytdlc/dao/LoginDao.java
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package com.ytdlc.dao;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import com.ytdlc.entity.Login;
//模型层用于处理登录
public class LoginDao {
/**
private final String URL="jdbc:oracle:thin:@127.0.0.1:1522:ORCL";
private final String USERNAME="scott";
private final String PASSWORD="tiger";
**/
public static int login(Login login) {
//boolean flag=false;
Connection connection=null;
PreparedStatement pstmt=null;
ResultSet rs=null;
int result=-1;
try {
Class.forName("oracle.jdbc.OracleDriver");
connection=DriverManager.getConnection("jdbc:oracle:thin:@localhost:1522:ORCL","scott","tiger");
String sql="select count(*) from login where uname=? and upwd=?";
pstmt=connection.prepareStatement(sql);
pstmt.setString(1,login.getUname());
pstmt.setString(2,login.getUpwd());
rs=pstmt.executeQuery();
if(rs.next()) {
result=rs.getInt(1);
}
if(result>0) {
return 1;
}else {
return 0;
}
} catch (ClassNotFoundException e) {
e.printStackTrace();
return -1;//系统异常登陆失败
} catch (SQLException e) {
e.printStackTrace();
return -1;
}catch (Exception e) {
e.printStackTrace();
return -1;
}finally {
try {
if(rs!=null) rs.close();
if(pstmt!=null) pstmt.close();
if(connection!=null) connection.close();
} catch (SQLException e) {
e.printStackTrace();
}catch (Exception e) {
e.printStackTrace();
}
}
}
}

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src/com/ytdlc/entity/Login.java
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package com.ytdlc.entity;
public class Login {
private int id;
private String uname;
private String upwd;
public Login() {
}
public Login(String uname, String upwd) {
this.uname = uname;
this.upwd = upwd;
}
public Login(int id, String uname, String upwd) {
super();
this.id = id;
this.uname = uname;
this.upwd = upwd;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getUname() {
return uname;
}
public void setUname(String uname) {
this.uname = uname;
}
public String getUpwd() {
return upwd;
}
public void setUpwd(String upwd) {
this.upwd = upwd;
}
}

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src/com/ytdlc/servlet/CheckCodeServlet.java
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package com.ytdlc.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.ytdlc.dao.LoginDao;
import com.ytdlc.entity.Login;
//控制器层
@WebServlet("/CheckCodeServlet")
public class CheckCodeServlet extends HttpServlet {
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//login
//获取客户端验证码
String CheckCodeClient=request.getParameter("checkcode");
//获取记录的真实验证码值
String CheckCodeServer=(String) request.getSession().getAttribute("CHECKCODE");
request.setCharacterEncoding("utf-8");
String name=request.getParameter("uname");
String pwd=request.getParameter("upwd");
Login login=new Login(name,pwd);
//LoginDao logindao=new LoginDao();
int result=LoginDao.login(login);
if(result>0) {
if(CheckCodeServer.equals(CheckCodeClient)) {
response.sendRedirect("welcome.jsp");
}else {
response.sendRedirect("LoginFailure.jsp");
}
}else {
response.sendRedirect("LoginFailure.jsp");
}
/**
String resultTip="images/wrong.jpg";
//获取客户端验证码
String CheckCodeClient=request.getParameter("checkcode");
//获取记录的真实验证码值
String CheckCodeServer=(String) request.getSession().getAttribute("CHECKCODE");
if(CheckCodeServer.equals(CheckCodeClient)) {
resultTip="images/right.jpg";
}
response.setContentType("text/html; charset=UTF-8");
PrintWriter writer=response.getWriter();//获取输出流
writer.write(resultTip);
writer.flush();//刷新
writer.close();
***/
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doGet(request, response);
}
}
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